Which command is responsible for Marine Corps Combat Development?

The correct answer is Marine Corps Combat Development Command. This command is specifically tasked with overseeing the development and integration of the operational capabilities required by the Marine Corps. It plays a crucial role in identifying the future needs of the Marine Corps, focusing on concepts, doctrine, and organization that shape how the Marines prepare for and engage in combat. The Combat Development Command ensures that all elements of the Marine Corps are coordinated in achieving effective combat preparedness, making it the central authority for combat development.

In contrast, while Marine Corps Systems Command plays a role in acquiring equipment and providing support to the Marine Corps, it is not primarily focused on combat development itself. Headquarters Marine Corps serves an overarching administrative and policy-making function but does not engage directly in the development of combat strategies or capabilities. The Marine Air Ground Task Force refers to a composite organization combining air, ground, and logistics elements, designed for operational flexibility, but this task force does not encompass the broader developmental responsibilities covered by the Combat Development Command. Therefore, the specificity and focus of the Marine Corps Combat Development Command makes it the appropriate answer for the question regarding responsibility in Marine Corps combat development.